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NIOSHTIC-2 Publications Search

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New dual bag nozzle system.

Authors

Cecala-AB; Thimons-ED

Source

Ceram Eng and Sci Proc 1989 Jan; 10:36-41

Link

NIOSHTIC No.

10007201

Abstract

A new dual bag nozzle system has been designed, tested, and shown to effectively reduce workers' exposure to the dust associated with the bag filling process at mineral processing plants. This U.S. Bureau of Mines system is composed of a nozzle within a nozzle. The inner nozzle is used to fill the bag with product. The outer nozzle exhausts excess air from the bag after filling is completed. This depressurizes the bag and reduces product loss through the bag valve during ejection from the fill station and during the conveying process. An improved bag clamp also reduces product blowback during bag filling. Dust reductions of 80 to 90 pct have been achieved for both the bag operator and the workers loading the bags onto pallets. There has also been a 90-pct reduction in product blowback during bag filling, which can account for tremendous product savings.